Factors Predicting Participation in the Prospective Genomic Sequencing Study, Total Cancer Care (TCC), in Kentucky

McKayla J. Riggs, Bin Huang, Quan Chen, Therese Bocklage, Marissa R. Schuh, Ming Poi, John L. Villano, Michael J. Cavnar, Susanne M. Arnold, Rachel W. Miller, Frederick R. Ueland, Jill M. Kolesar

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Purpose: Large-scale genomic sequencing studies are driving oncology drug development. However, rural populations, like those residing in Appalachian Kentucky, are underrepresented in these efforts. In this study, we determined the frequency of participation, reasons for nonparticipation, and factors predicting the decision to participate in the Total Cancer Care (TCC) prospective genomic cohort study. Methods: A total of 1,188 patients were invited to enroll in the TCC prospective cohort from December 2018 to May 2019. Declining patients were queried for their rationale for nonparticipation and their patient data were obtained from the Kentucky Cancer Registry (KCR). Logistic regression was used to assess the association between characteristics and study participation. The association of study participation with survival was modeled with Cox proportional-hazards regression. Results: 90.9% (1,081) patients consented to participate. In multivariate analysis, factors significantly associated with participation were age, gender, treatment status, and race. Though overall more women participated in the study, men were more likely to participate than women when invited (OR 1.57). Younger, Caucasian individuals who had received chemotherapy, but not surgery, were also more likely to participate. Patients in the Kentucky Appalachian cohort were primarily rural, had less educational attainment, and lower socioeconomic status. Kentucky Appalachian patients were no less likely to enroll in TCC than non-Appalachian patients. Consented individuals had higher overall survival compared to those who declined. Conclusion: Though minorities, those with low socioeconomic status, and rural populations are underrepresented in genomic studies, they were no less likely to participate when given the opportunity, and participation was associated with better clinical outcomes.

Original languageEnglish
Pages (from-to)5-13
Number of pages9
JournalJournal of Rural Health
Volume38
Issue number1
DOIs
StatePublished - Jan 1 2022

Bibliographical note

Funding Information:
Funding: The authors gratefully acknowledge the support of the Biospecimen Procurement and Translational Pathology Shared Resources, the Cancer Research Informatics Shared Resource, and NCI Cancer Center Support Grant (P30 CA177558).

Publisher Copyright:
© 2020 National Rural Health Association

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

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